Echinacea, also known as Purple Coneflower, is a natural antibiotic and immune system stimulator, helping to build resistance to colds, flu, and infections. It increases the production of white blood cells, and improves the lymph glands. The tea from this herb should be used in all infections, and has been used in treating skin cancers and other cancers. Please note that if you suffer from any auto-immune disorder, you should use Echinacea, or any other immune stimulant herb, only under the guidance of a professional, such as a naturopathic doctor, TCM, practitioner, etc.